BLW step by step: how to start solids safely

BLW (baby-led weaning) is a way to start solids in which your baby feeds themselves with soft, safe pieces of food. Here's when and how to start, without the myths.

What is BLW?

Instead of spoon-fed purées, BLW offers food in appropriate pieces so the baby picks it up with their hands and explores textures and flavors at their own pace. It encourages autonomy, hand-to-mouth coordination and something I care about deeply as a physician: a healthy relationship with food from the very start, because the baby learns to respond to their own hunger and fullness cues.

One important nuance: BLW is not "all or nothing". The evidence does not show one method to be clearly superior to another; what matters is starting on time, safely, and respecting the baby's pace. My philosophy here is the same as with adults: not forbidding or imposing rigid rules, but reaching agreements that work for your family.

When to start? Signs your baby is ready

Usually around 6 months, when your baby:

• Sits with little or no support and holds their head steady.
• Shows interest in food: watches you eat, opens their mouth, reaches for your plate.
• Has lost the tongue-thrust reflex (no longer pushes everything out with the tongue).
• Can bring objects to their mouth on purpose.

The World Health Organization recommends starting complementary feeding around 6 months, keeping breast milk or formula as the foundation through the first year. Age is a reference, not a switch: if your baby was born premature, the readiness signs may appear later (they are assessed by corrected age) and it's best to plan the start with their pediatrician.

Iron matters (a lot) at 6 months

Around 6 months, the iron stores a baby is born with tend to run low, and milk alone no longer covers what their brain and growth demand. That's why it helps to have sources of iron on the plate from the very first week.

• Beef or chicken, well cooked, in soft strips or shredded.
• Egg yolk, well cooked, or an egg omelet cut into strips.
• Beans and lentils, cooked until very soft and mashed.
• Iron-fortified infant cereals, if you choose to use them.

A simple trick: pair plant sources with fruits rich in vitamin C (guava, mango, orange), because it may improve the absorption of plant-based iron.

First foods that work well

The general rule: soft foods (that you can squash between two fingers), cut into sticks about the width of an adult finger and long enough to poke out of the baby's fist. At this age babies grab with the whole hand, not yet with their fingertips.

• Avocado in sticks (if it slips, roll it in ground oats).
• Ripe banana, leaving half the peel on as a "handle".
• Cooked ripe plantain, potato, squash or carrot, steamed until very soft.
• Steamed broccoli: the stalk works as a natural handle.
• Beef or chicken strips, soft unsalted arepa, lightly toasted unsalted bread.

About the major allergens (egg, peanut in a safe form, fish): evidence suggests that introducing them early may support tolerance, unless there is a medical reason not to. Around 8 or 9 months, once the pincer grasp appears, you can start offering smaller pieces.

What to avoid before 12 months

There are few true prohibitions at this stage, but these do matter for safety:

• Honey: risk of infant botulism, even in small amounts or cooked.
• Whole or chopped nuts and popcorn: high choking risk. Nut butters, spread in a thin layer, are fine to offer.
• Round, firm shapes: whole grapes and cherry tomatoes (cut them lengthwise into quarters), sliced sausage rounds, hard raw carrot or apple.
• Added salt and sugar: a baby's kidneys are still immature and their palate is being shaped. No juices or sugary drinks either.
• Cow's milk as a main drink before one year; as an ingredient in a recipe it can be used in small amounts.

The UK's NHS keeps a clear list of foods to avoid in the first year, useful for settling specific doubts.

How to start safely

• Offer soft pieces, finger-sized, that crush easily.
• The baby always eats seated and upright in their high chair, never reclined, crawling, walking or riding in the car with food in their mouth.
• Active supervision: an adult in front of them, watching, with no screens or distractions. Eating together also teaches them by imitation.
• Let the baby bring the food to their own mouth: controlling their own bite is part of what makes the method safe.
• Basic hygiene: washed hands (yours and theirs), eggs and meats cooked through, and refrigerate leftovers promptly.
• Start with a few foods and introduce variety gradually.

Choking vs. gagging

It's normal for the baby to gag at first: it's a protective reflex that at 6 months is triggered far forward on the tongue and helps them push back toward the front any pieces they can't yet manage. Gagging is noisy: the baby coughs, turns red and recovers on their own within seconds. Real choking (when the airway is blocked) is different: it tends to be silent, the baby cannot cough or cry, and it requires acting immediately.

With appropriate textures, good posture and supervision, choking is uncommon. Even so, during a gag don't give water or back slaps, don't pull them out of the chair and don't sweep their mouth blindly. And before you start, learn basic infant first-aid maneuvers: they bring enormous peace of mind.

A realistic first week (and the mixed approach)

Remember the starting point: until close to the first birthday, milk remains the main food and solids are complement and practice. A reasonable first week can look like this:

• Days 1 to 3: one meal a day, at a calm moment, with the baby rested and not overly hungry. One or two foods, including a source of iron.
• Days 4 to 7: repeat what they already know and add one new food every few days; that makes it easier to spot any reaction.
• Realistic expectation: much of the food will end up on the floor and what actually gets swallowed will be minimal. That's normal: they are learning, not filling up.

What if you'd rather combine with a spoon? Perfect. The mixed approach (purées and soft pieces in the same stage) is valid and very common: you can preload the spoon and let the baby bring it to their mouth, and move on soon from smooth purées to lumpier textures, because evidence suggests that delaying them too long may make them harder to accept later. The American Academy of Pediatrics insists on the same thing: respond to the baby's hunger and fullness cues, whether the food comes puréed or in pieces.

When is it worth consulting?

Most healthy babies can start with these guidelines. Seek professional support if:

• Your baby was born premature or with low birth weight.
• There is a family history of food allergy, asthma or significant atopic dermatitis.
• You are worried about their growth, or they persistently refuse solids.
• They choke frequently, gagging doesn't improve over the weeks, or you notice difficulty swallowing.
• They have a medical condition (significant reflux, low muscle tone, among others) that could affect feeding.

In those cases, an individualized plan prevents scares and makes the whole process much more enjoyable for everyone.

Frequently asked questions

This article is informational and does not replace a consultation. For personalized support, book a pregnancy & babies consultation.

Dr. Andrea Pérez Jaramillo Physician with a master's in Nutrition and Food (University of Barcelona). In-person care in Medellín and online, in English and Spanish. Learn more →